ML145583 Datasheet, PDF (1/7 Pages) LANSDALE Semiconductor Inc. – 3.3 Volt Only Driver/Receiver with an Integrated Standby Mode RS 232/EIA-232-E and CCITT V.28

ML145583
3.3 Volt Only Driver/Receiver with
an Integrated Standby Mode
RS 232/EIA–232–E and CCITT V.28
Legacy Device: Motorola MC145583
The ML145583 is a CMOS transceiver composed of three drivers and
five receivers that fulfills the electrical specifications of EIA–232–E,
EIA–562, and CCITT V.28 while operating from a single + 3.3 or + 5.0 V
power supply. This transceiver is a high–performance, low–power con-
sumption device that is equipped with a standby function.
A voltage tripler and inverter converts the + 3.3 V to ± 8.8 V, or a volt-
age doubler and inverter converts the + 5.0 V to ± 8.8 V. This is accom-
plished through an on–chip 40 kHz oscillator and five inexpensive exter-
nal capacitors.
FEATURES
Drivers:
• ± 5 V Minimum Output Swing at 3.3 or 5.0 V Power Supply
• 300 Ω Power–Off Impedance
• Output Current Limiting
• Three–State Outputs During Standby Mode
Receivers:
• ± 25 V Input Range
• 3 to 7 kΩ Input Impedance
• 0.8 V Hysteresis for Enhanced Noise Immunity
• Three–State Outputs During Standby Mode
Ring Monitor Circuit:
• Invert the Input Level on Rx1 to Logic Output Level on RIMON at
Standby Mode
28
1
SOIC 28W = -7P
SOG PACKAGE
CASE 751F
PACKAGE
SOIC 28W
MOTOROLA
LANSDALE
MC145583DW ML145583-7P
Note: Lansdale lead free (Pb) product, as it
becomes available, will be identified by a part
number prefix change from ML to MLE.
PIN ASSIGNMENT
C5+ 1
28 C2+
GND 2
27 VCC
C5– 3
RIMON ⁴
VSS ⁵
STB ⁶
Rx1 ⁷
Rx2 ⁸
Rx3 ⁹
Tx1 ¹⁰
Rx4 ¹¹
Tx2 ¹²
Rx5 ¹³
Tx3 ¹⁴
26 C2–
RING
MONITOR
25 C1+
CIRCUIT
(INVERTING) ^{24 C1–}
23 VDD
22 _DO1
21 _DO2
20 _DO3
19 _DI1
18 _DO4
17 _DI2
16 _DO5
15 _DI3
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